I could see Talia and LOS in BVS given that she was pretty under used in TDKR and she was quickly vanquished after her full plan was revealed. Plus I think her organization would fit better with a Lex and Superman story than Catwoman, but even then, its been there, done that . I doubt they'd want the same love interest and the LOS two films in a row, and Catwoman suffers the same issue.